The DELVE DR1 dataset consists of \(\sim \) 30,000 DECam exposures, with exposure times between \(30\mathrm {\,s} < {\rm t_{exp}} < 350\mathrm {\,s} \) .
Additionally, the following quality cuts were applied to individual exposures: a minimum cut on the effective exposure time scale factor \(\mathrm {t_{eff}} > 0.3\)  [1]} and a good astrometric solution relative to Gaia DR2 (For each exposure \(>250\)  astrometric matches, \(\chi ^2_{\rm astrom} < 500\) , where a match has \(\Delta (\alpha ) < 150\mathrm {\,mas} \) , and \(\Delta (\delta ) < 150\mathrm {\,mas} \) ).
All exposures were processed with the DES Data Management (DESDM) pipeline [2]}, enabling sub-percent-level photometric accuracy by calibrating based on seasonally averaged bias and flat images and performing full-exposure sky background subtraction [3]}.
Automatic source detection and photometric measurement is performed on each exposure using SExtractor and PSFex [4]}, [5]}.
Astrometric calibration was performed against Gaia DR2 using SCAMP [6]}.
Photometric zeropoints for each CCD were derived by performing a \(1\mathrm {\,arcsec} \)  match between the DELVE SExtractor catalogs and the ATLAS Refcat2 catalog [7]},
and using transformation equations derived by comparing stars in ATLAS Refcat2 to calibrated stars from DES DR1 to convert the ATLAS Refcat2 measurements into the DECam griz-bandpass [8]}.
The zeropoints derived from this processing were found to agree with the DES DR1 zeropoints with a scatter of \(\lesssim 0.01 \mathrm {\,mag} \) .
Dust extinction corrections were applied using extinction maps from [9]} assuming \(R_V=3.1\)  and a set of \(R_\lambda \)  coefficients derived by DES [10]} including a normalization adjustment from [11]}.
Hereafter, all quoted magnitudes have been corrected for interstellar extinction.
For more details on the catalog creation and validation see [8]}.
